Can now specify which button is used to open the menu when creating a popup menu with IECoreMaya.createMenu.
Can now specify which button is used to open the menu when creating a popup menu with IECoreMaya.createMenu.

ruschelp/cortex-vfx,code-google-com/cortex-vfx,ruschelp/cortex-vfx,code-google-com/cortex-vfx,ruschelp/cortex-vfx,code-google-com/cortex-vfx,code-google-com/cortex-vfx